Facility	City	Industry	Status	Distance
Electric Hydrogen	San Carlos	Industrial Gas Manufacturing 325120	UNVERIFIED	4.0 KM
Seaport Environmental - Refining	Redwood City	Petrochemical Manufacturing 325110	LIKELY ACTIVE	4.2 KM
Former Baron-blackeslee Facility, 248 Harbor Blvd, Belmont, Ca	Belmont	All Other Basic Organic Chemical Manufacturing 325199	UNVERIFIED	3.9 KM
Peninsula Laboratories INC	San Carlos	Cyclic Crude, Intermediate, and Gum and Wood Chemical Manufacturing 325194	UNVERIFIED	4.3 KM
Former Baron-blakeslee Facility, 260 Harbor Blvd, Belmont, Ca	Belmont	All Other Basic Organic Chemical Manufacturing 325199	UNVERIFIED	4.2 KM

Every listed plant in San Mateo County

Also at this address

No other federal record shares this street address.

WHERE THIS RECORD COMES FROM — 2 FEDERAL SOURCES, 6 FIELDS

Every fact on this page traces to a public federal filing. The table below names which register holds this facility, whether that register proves the plant operates or only that it exists, and when each of them last saw it.

EPA cross-references this facility in BR, CA-CERS, CA-ENVIROVIEW, EGRID, EIA-860, EIS, HWTS-DATAMART, NPDES, RCRAINFO · EPA site type STATIONARY.

Source	Evidence	First seen	Last seen
EPA ECHO	OPERATING	DEC 2022	DEC 2022
EPA FRS	EXISTENCE	AUG 2021	AUG 2021

FIELD BY FIELD — WHICH SOURCE SUPPLIED WHAT

FIELD	SOURCE	SIGNAL
ADDRESS LINE1	EPA FRS	JUL 2026
CITY	EPA FRS	JUL 2026
GEOM	EPA FRS	JUL 2026
NAME	EPA FRS	JUL 2026
RCRA GENERATOR STATUS	EPA ECHO	AUG 2026
STATE	EPA FRS	JUL 2026

Status is computed from independent sources; nothing here is self-reported unless marked Claimed.

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